Interviews with 22 kaitiaki (environmental guardians) from 14 tribes spread throughout the North Island of New Zealand revealed a common concern that the abundance and diversity of sea foods have declined along much of the coastline over the past 30–50 years. While Western conservationists have tended to emphasise ecological impacts, kaitiaki are concerned at both ecological and cultural consequences of the losses. Cultural consequences include severance of links between people and the food species, reduced connections between people in the community, erosion of ways that kinship is maintained, severed transmission of cultural knowledge, and impaired health and tribal development.